K wrote:
> 4/ Poor exploit mitigation under Solaris. In comparaison, OpenBSD,  
> grsec linux and Windows => XP SP2 have really good exploit  
> mitigation.... It is a shame because solaris offered a non-exec stack  
> before nearly everyone else... but it stopped there... no heap  
> protection, etc...

Have you looked at privileges(5) and in particular look at how little 
privilege many of the system daemons run with - sometimes even *less* 
privilege than an normal user login.

Heap protection isn't the only way and it only protects against certain 
types of exploit.  It doesn't help protect against logic flaws that get 
a program to do something it shouldn't but could but without giving it 
new code to run.

Though what this has to do with xen or zfs I don't know this is a topic 
that would be better for security-discuss, so I've set the reply-to there.


-- 
Darren J Moffat
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